<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        
    </style>
</head>

<body>
    <form method="post" action="http://127.0.0.1:3000/">
        用户名：<input type="text" name='username'>
        密码：<input type="text" name='userpassword'>
        <button>登录</button> 
    </form>
</body>

</html>